1) Antiquarian 2) Expert 1) Antiquer 
• (n.) One devoted to the study of ancient times through their relics, as inscriptions, monuments, remains of ancient habitations, statues, coins, manuscripts, etc.; one who searches for and studies the relics of antiquity. • (a.) Pertaining to antiquity.
An'ti·qua·ry adjective [ Latin antiquarius , from antiquus ancient. See Antique .] Pertaining to antiquity. [ R.] 'Instructed by the antiquary times.' Shak. 
[n] - an expert or collector of antiquities
antiquary Everything has been thought of before, but the problem is to think of it again. —Johann W. von Goethe Related before-word units: antero-; anti-; pre-; pro-.
antiquarian noun an expert or collector of antiquities
an expert on or student of antiquities. · a collector of antiquities.